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我有這樣的XSD的xs:attributeGroup值限制
<xs:attributeGroup name="PropertyAttributes">
<xs:attribute name="IsAttached" type="xs:boolean" default="false" />
<xs:attribute name="IsStatic" type="xs:boolean" default="false" />
</xs:attributeGroup>
我想限制這種情況下 IsAttached =真IsStatic =真
我怎麼能做到這一點?